Heat-insulating wall



Sept. 18,1923

C. F. MAYER HEAT INSULATING WALL Filed June 2'7, 1921 QQMQ 3x W,MY\/\MPatented 5ept. 18, 1.511;"

@ARL F. MAYER, 01E

ATENT FFHE OHIO, ASSIGNOR TO THE SWARTWOUT comm, OF l 0M0, A CORPORATIONOF OHIO.

1 T-INSULATIHG WALL.

Application filed June 27, 1921. Serial No. 480,586.

To all whomit may concern:

Be it known that I, CARL F. MAYER, a. citizen of the United States,residing at Cleveland. in the county of Cuyahoga and State of Ohio, haveinvented a certain new and useful I Improvement in Heat-InsulatingWalls, of which the following is a full, clear, and exactdescription,'reference being had to the accompanying drawings.

This invention relates generally to heat insulating walls, and moreparticularly to a sectional heat insulating wall that is espgiallysuitable for use in various kinds of ovens such, for example, as 'coreovens; enameling ovens; drying ovens, etc.

Heat insulating walls commonly used in constructions of the foregoingclam are composed of inner and outer metallic plates that are separatedby insulating material, and the walls are usually made in sections tofacilitate manufacture, transportation and handling; and to properlymaintain the efficiency of the oven it is essential that the jointsbetween the wall sections be of such nature as will minimize thetransmission of heat from the inner to the outer side of the wall. a

The objects of my invention are to provide a sectional heat insulatingwall that is comparatively simple and inexpensive of construction andwherein the opposed edges of the wall sections or slabs are preferablysubstantially identical and so constructed as to avoid metalliccontinuity between the inner and outer sides of the slab; to provide,with such a slab construction, means for connecting together theadjoining edges of adjacent slabs in such manner as to eflectuallypreclude the passage of heat from the inner to the outer side of thewall; to provide a joint of the immediately foregoing nature whichpermits of expansion and contraction of the connected slabs withoutaffecting its eflicienc-y and appearance; and to provide a constructionfor oven wall sections or slabs through which assembling of the slabconstituents is facilitated, and the disassembling thereof is renderedconvenient. to the end that the insulation of the wall slab may beeasily inspected and replaced when occasion requires.

The objects above enumerated, and others which shall hereinafter appear,are attained in the embodiment of the invention illustrated in thedrawing accompanying and forming a part hereof and wherein Fig. 1 is afragmentary perspective view of an oven wall, showing adjoining slabs orsections constructed and connected in accordance with my invention; andFig. 2 is a sectional view showing adjoining slabs connected by a jointirlicorporating a modified form of finishing p ate. I

The wall slabs or sections A and B are substantially identical, and eachcomprises inner and outer metallic plates 1 and 2 that are properlyspaced apart, and the space between these plates may be filled with abody 3 of insulating material, such as asbestos, the lateral edges ofthe body 3 terminating short of the corresponding edges of the plates 1and 2, and edge strips 4 of channel formation are inserted between theprojecting edge portions of the inner and outer plates with their sideflanges 5 parallel therewith and insulated therefrom by strips 6 ofsuitable insulating material, such as asbestos. The flanges 5, andadjacent edge portions of the plates 1 and 2. have wrapped about them asecond strip 7 of similar insulating material, and these parts areeflectually clamped together between the inner and outer flanges 8 and 9of metallic bind ers 10 that are U-shaped in cross section and,preferably, frictionally engaged with the above mentioned parts. To holdthe binders against too easy a dislodgement, they and therplates 1 and 2may be provided with cooperating retaining means, such as re isteringdepressions 11, while the foregolng construction provides a substantialmechanical connection between the inner and outer plates 1 and 2, itaflords an eflectual insulation of the plates from each other.Furthermore. inasmuch as. the binders 10 are frictionally engaged overthe edge portions of said plates, and over the flanges 5 of the edgestrips 4, with yieldable insulating material between them, the parts arermly clamped together, although they may be conveniently separated byremoving the binders 100 when it is desired to inspect or re lace thebody 3 of insulating material.

n assembling the wall, the slabs are arand elements 15 of suitableinsulating material are engaged within the channel shaped edge strips ofopposed slabs so as to properly align the slabs and hold them in correctrelative position. In Fig. 1, I have shown finishing plates 16, havingtheir lateral edges turned over and inwardly for cooperat on with theedges of the outer flanges 9 of binders 10, as-applied to the binders toconceal the'joint. The joint thus constructed eifectually holds theadjoining slabs in a common plane, and permits a practical degree ofexpansion and contraction of the slabs without in any way affecting thecharacter or appearance of the joint.

With the form of finishing plate shown in Fig. 1, it is necessary toslip the plate endwise over the joint after the slabs are set up, unlessone of its edges is flanged inwardly after the "other is applied, whichis a more or less undesirable operation. In Fig. 2, I have shown amodified form of finishing plate 17 which may be applied to one slabbeforethe adjacent one is set up, obviating the need of feeding itendwise over the joint, thus making it more desirable of use under somecircumstances.

Havin thus described my invention, what I c aim is:

1. In a heat insulating slab, the combination of an inner and an outermetallic plate, a metallic edge strip disposed between the edge portionsof said plates, means separate from said plates and edge strip forconnecting them together, and means .for insulating the foregoingelements from each other.

2. In a heat insulating slab, the combination of an inner and an outermetallic plate, a metallic edge strip disposed between the edge portionsof said plates, means separable from the edge strip and plates forbinding them together, and means insulating the foregoing elements fromeach other.

3. In a heat insulating slab, the combination of an inner and an outermetallic plate, a channel strip disposed between the edge portions ofthe plates with its side flanges substantially parallel to saidportions, means insulating from each other the side flanges of the stripand the adjacent side portions of the plates, and further means separatefrom said arts for connecting them together.

4. In a heat insulating slab, the combi nation of an inner and an outermetallic plate, a channel strip disposed between the edge portions ofthe plates with its side flanges substantially parallel to said edgeportions, binders that are U-shaped in cross section engaged about saidedge portions and flanges, and insulating material interposed betweensaid flanges and edge portions and between the last mentioned parts andthe binders thereby to interrupt metallic continuity between the innerand outer an outer metallic plate, a channel strip disposed between theedge portions of said plates and facing outwardly so as to be in opposedrelation to the corresponding element of the adjacent slab, meansbinding togethe and insulating from each other the flanges of thechannel strips and the ad jacent edge portions of the plates, and anelement comprised of insulating material occupying the opposed channelstrips of adjacent slabs thereby to hold said'slabs in a substantiallycommon lane.

6. In a heat insulatlng Wall, the combination of a plurality of slabsarranged edge to edge, each slab comprising an inner and an outermetallic'plate, achannel strip disposed between the edge portions ofsaid plates and facing outwardly so as to be in opposed relation to thecorresponding element of the adjacent slab, binders that are U-shaped incross section embracing the flanges of the channel strips and theadjacent edge portions of the aforesaid plates, insulating materialinterposed between said flanges and edge portions and between said partsand the binders, and an element comprised of insulating materialoccupying the opposed channel strips of adjacent slabs thereby to holdthe said slabs in a substantially common plane.

7 In a heat insulatin wall, the combination of a plurality of sla bsarranged edge to edge, each slab comprising an inner and an outermetallic. plate, a channel strip disposed 'between the edge portions ofsaid plates and facing outwardly so as to be in opposed relation to thecorresponding element of the adjacent slab, binders that are U- shapedin cross section embracing the flanges of the channel strips and theadjacent edge portions of the aforesaid plates, insulating materialinterposed between said flanges and edge portions and between said partsand the binders, an element comprised of insulating material occupyingthe opposed channel strips of adjacent slabs thereby to hold the saidslabs in a substantially common plane, and finishing plates applied toand concealing the outer flanges of adjacent hinders, the lateral edgesof the finishing plates being turned inwardly and about the adjacentflanges of the binders.

8. In a heat insulating wall, the combination of a plurality of slabsarranged edge to edge, each slab permanently incorporating a flangealong its edge that is opposed to the corresponding flange of theadjacent slab, and a finishing plate applied to and edge 0 plane osed toand in substantially the the flange of the adjacent slab,

and a finishing plate having its lateral edges turned over and inwardlyupon its body portion then over and outwardly to form 0pposed channelsfor the reception of the aforesaid flanges of the wall slabs.

In testimony whereof, I hereunto affix n1 siature.

y :n CARL F. MAYER.

